== data model ==
Objekte:

=== geo_coordinates/site === 
(name, id, longitude, latitude)
 
=== localisation === 
(id, geo_coodinates.id, ancient_place.id, certainty, reference, description) 

=== ancient_place === 
(id, name, description)

=== identification === 
(id, ancient_place.id, place.id, certainty, reference, description)
question: page

=== place === 
(id, name, source, text_reference)

=== connection ===
(id, start_place_id, end_place_id)

=== route ===
(id, start_place_id, end_place_id)

=== connections_of_route ===
(id, route_id, connection_id)